gnu: spdk: Fix build.

* gnu/packages/storage.scm (spdk)[arguments]<#:phases>
{skip-python-make-subdir, install-python-package}:
New phases to fix building the Python part.
{wrap-python-scripts}: Adapt script names
{patchelf}: Add ncurses to RUNPATH so that spdk_top can find
libpanelw.so.6 and libmenuw.so.6 at runtime.
[native-inputs]: Add python-installer.
[inputs]: Drop python-pip, python-setuptools and python-wheel.
Add python-hatchling.
[description]: Add a note on missing inputs that result in commands
not working as expected.

Fixes: guix/guix#7916
Change-Id: Ic05547829d3f8ac018417bc3743adcb6b377a41b
Signed-off-by: Andreas Enge <andreas@enge.fr>

gnu/packages/storage.scm

@@ -404,6 +404,14 @@ clients.  The key features are:
             (lambda _
               (rmdir "isa-l")
               (symlink #$(package-source (this-package-input "isa-l")) "isa-l")))
+          (add-after 'substitute-git-submodules 'skip-python-make-subdir
+            ;; SPDK's Makefile calls 'pip install' for the python subdir, but
+            ;; pip 25+ crashes in the sandbox (SSL cert path not found at
+            ;; import time).  Remove python from DIRS-y and install the package
+            ;; ourselves in install-python-package below.
+            (lambda _
+              (substitute* "Makefile"
+                (("DIRS-y \\+= python") ""))))
           (replace 'configure
             (lambda* (#:key configure-flags #:allow-other-keys)
               (substitute* "configure"
@@ -443,7 +451,8 @@ clients.  The key features are:
                        (string-append #$(this-package-input "dpdk") "/lib")
                        (string-append #$(this-package-input "fuse") "/lib")
                        (string-append #$(this-package-input "gcc") "/lib")
-                       (string-append #$(this-package-input "glibc") "/lib")))
+                       (string-append #$(this-package-input "glibc") "/lib")
+                       (string-append #$(this-package-input "ncurses") "/lib")))
                      (rpath* (apply string-append (map (lambda (l) (string-append l ":")) libs))))
                 (for-each
                  (lambda (b)
@@ -459,9 +468,30 @@ clients.  The key features are:
                  binaries))))
           (add-after 'patchelf 'python:wrap
             (assoc-ref py:%standard-phases 'wrap))
+          (add-before 'python:wrap 'install-python-package
+            ;; Install the SPDK Python package using hatchling + installer,
+            ;; bypassing pip (which crashes in the sandbox due to SSL).
+            ;; spdk/version.py is normally generated by python/Makefile, so
+            ;; we recreate it here from the top-level VERSION file.
+            (lambda* (#:key outputs #:allow-other-keys)
+              (invoke "python" "-c"
+                (string-append
+                  "v=open('VERSION').read().strip();"
+                  "p=v.split('.');"
+                  "ver=p[0]+'.'+p[1]+(('.'+p[2]) if len(p)>2 and p[2]!='0' else '');"
+                  "open('python/spdk/version.py','w')"
+                  ".write(\"__version__ = '\"+ver+\"'\\n\")"))
+              ;; ZIP format requires timestamps >= 1980; Guix normalizes
+              ;; source timestamps to epoch 0, so clamp SOURCE_DATE_EPOCH.
+              (setenv "SOURCE_DATE_EPOCH" "315532800")
+              (with-directory-excursion "python"
+                (invoke "python" "-m" "hatchling" "build" "-t" "wheel")
+                (let ((wheel (car (find-files "dist" "\\.whl$"))))
+                  (invoke "python" "-m" "installer"
+                          "--prefix" #$output wheel)))))
           (add-after 'python:wrap 'wrap-python-scripts
             (lambda* (#:key inputs #:allow-other-keys)
-              (let* ((scripts '("bin/spdk_cli" "bin/spdk_rpc" ))
+              (let* ((scripts '("bin/spdk-cli" "bin/spdk-rpc"))
                      (dependencies (map (lambda (input)
                                           (assoc-ref inputs input))
                                         '("python-configshell-fb")))
@@ -479,6 +509,7 @@ clients.  The key features are:
            automake
            patchelf
            pkg-config
+           python-installer
            python-wrapper))
     (inputs
      (list cunit
@@ -499,9 +530,7 @@ clients.  The key features are:
            openlibm
            openssl
            python-configshell-fb
-           python-pip             ; XXX: expected by install, check why
-           python-setuptools      ;
-           python-wheel           ;
+           python-hatchling       ;build backend for python/pyproject.toml
            (list util-linux "lib") ;; <uuid.h>
            zlib
            zstd))
@@ -510,7 +539,11 @@ clients.  The key features are:
     (description
      "@acronym{Storage Performance Development Kit, SPDK} provides a set of
 tools and libraries for writing high performance,scalable, user-mode storage
-applications.")
+applications.
+
+Note: the @command{spdk-mcp} binary requires the optional @code{mcp[cli]}
+Python dependency, and @command{spdk-sma} requires @code{grpcio} and
+@code{protobuf}.  These are not currently packaged in Guix.")
     (license license:bsd-3)))
 
 (define-public swapspace